Animalia

• No cell walls
• No large central vacuole
• Usually no chloroplasts
• Have centrioles to aid in spindle formation
• Store excess sugars as glycogen

Every group arose from same common ancestor

Refers to a group of organism composed of members that do not share a unique common ancestor

Refers to a portion of a group that contains members having the same common ancestor but that does not include every descendant species o that common ancestor

• Sponges
• Lack true tissues
• Cells are not specialized into particular tissues
• Lack organs

mostly divide by differences in external symmetry and internal body cavities

• Initially by external symmetry (radially or bilaterally)
• (after cells become bilateral, they also go to 3 cell layers)
• Body Cavity
• Coelomates

• Have bodies stretching out in equal directions from a central point
• Round organism

• Organized along one vertical or horizontal axis and tend to be long and thin
• All Vertebrate

Body cavity in addition to digestive tract, usually fluid filled cushion space

• Back
• Stomach
• Head 
• Tail

No body cavity between gut and outer wall

Body cavity that is lined by muscles and blood vessels on my on the outside surface of cavity

Body cavity lined by muscle tissue and blood vesles both on outer surface and inner one, surrounding the entire digestive tract

• Sponges
• Two cell layers
• Silicon and calcium skeletons
• No symetry

• Jelly, corals, and hydra
• Two cell layers
• Bag like with tentacles
• Radically symmetric
• Stinging cells, neumatocycts

• Flatworms, tapeworms
• Many parasitic
• Lack Skeletal, circulatory, and respiratory
• Dorsal ventral nerves
• Acoelomate
• Bilateral symmetry

• Roundworms, Rotifers
• Body sender and elongated
• Posses internal organs
• Many parascitic
• Pseudocoelomate
• Bilateral

• Earthworms and Leaches
• Body Internally/externally segmented
• Many internal organs repeated throughout
• coelomate and bilateral symmetric

• Clams oysters and snails
• Mainly hard shelled
• All organ systems present
• No segment
• Coelomate
• Bilateral Symmetry

• Insects and crabs
• Exokeleton
• segmentation
• Ventral nerve chord
• Coelomate
• Bilateral Symmetry

• Sea Stars Urchines
• Coelomate
• Deuterstome
• Adults radial symmetry, Larvea Bilateral
• Water vascular systems
• Tube feet for feeding and movement

• Sea Squints and all vertebrates
• Notochord often becomes vertebral column
• Paired gill slits
• Dorsal nerve chord
• Coelomate 
• Bilateral symmetry

• Arthopods, mollusks, annelids 
• Protostomes

• Echinoderms and Chordatas
• Embryonic cells retain ability to split off and develop into new complete embryos long into development

• Segmentation
• Exoskeltons
• Molting
• Open Circulatory system

• Dorsal Hollow nerve chord
• Notochord
• Muscular tail
• Gill slits

• All chordata have longitudinal bending rod or tissue b/w gut and nerve cord, for support, can turn into bony vetebra
• From mesodermal cells

• Develops from pinching up of dorsal ectoderm, neutral tube, during embryo growth
• Develops CNS